Focus On Earth Science: California Grade 6

Chapter 8: Weathering and Erosion

Standard Assessment

1.
Floodplains are produced by _______. 2.b
A)meandering streams
B)alluvial fans
C)landslides
D)soil formation
2.
The thick fertile soil in California's Central Valley is due to deposition from _______. 2.a
A)landslides
B)annual flooding
C)seasonal windstorms
D)rivers that flow from the mountains
3.
Where does erosion occur in a slowly-flowing stream or river? 2.b
A)along the bottom
B)at the inside of a bend
C)at the outside of a bend
D)on the alluvial fan
4.
Which is the most common agent of chemical weathering? 2.a
A)carbon dioxide
B)water
C)ice
D)oxygen
5.
Some sediment is transported to shorelines by _______. 2.c
A)chemical weathering
B)creep
C)rivers
D)frost wedging
6.
Which of these does not cause physical weathering of rock? 2.a
A)burrowing animals
B)frost wedging
C)root pressure
D)exposure to acidic water
7.
What happens when chemical weathering occurs? 2.a
A)Material is lifted and redeposited by wind.
B)Frost wedging breaks rock into smaller pieces.
C)The thickness of sediment layers increases.
D)Rocks are broken into smaller pieces and their composition is changed.
8.
Moraines are sediments deposited by what process? 2.a
A)longshore transport
B)landslides
C)mass wasting
D)melting of glaciers
9.
Which best describes how soils are formed? 2.a
A)the action of glaciers
B)longshore transport
C)physical and chemical weathering
D)mass wasting
10.
Streams that flow down steep slopes have more ______ to cause erosion. 2.b
A)longshore transport
B)meanders
C)energy
D)floodplains
11.
Common depositional features that occur in deserts are _______. 2.b
A)oxbow lakes
B)alluvial fans
C)deltas
D)arroyos
12.
The formation of clay from the mineral feldspar is an example of _______. 2.a
A)deposition
B)physical weathering
C)chemical weathering
D)mass wasting
13.
Beach erosion is caused mainly by _______. 2.c
A)wind
B)rivers
C)ocean waves
D)floods
14.
Streams and rivers do not ______. 2.b
A)cause mass wasting
B)transport sediment
C)deposit sediment
D)erode the land
15.
On the steep slopes of mountains, fast-moving streams produce _______. 2.b
A)V-shaped valleys
B)U-shaped valleys
C)alluvial fans
D)meanders
Grade 6
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